Apparatus for bending glass.



No. 682,570. Patented Sept. I0, I90].

H. J. SAGE.

APPARATUS FOR sznnms GLASS.

(Application filed May 11, 1900.)

(No Model.)

YHE Nonms FETERS 60. vHoTo-UTHQ. wnsnlmmm. D. :4

' proper forms.

pieces havingcompound curves.

' UNITED STATES PATENT 5 OFFICE.

HENRY J. SAGE, OF BEAVER, PENNSYLVANIA, ASSIGNOR TO THE OPALITE TILE COMPANY, OF PITTSBURG, PENNSYLVANIA.

APPARATUS FOR BENDING GLASS- SPECIFICATION forming part of Letters Patent No. 682,570, dated September 10, 1901.

Application filed May 11, 1900. Serial No. raszo. (No model.)

To ctZZ whom, it may colwer t: I,

Be it known that I, HENRY J. SAGE, of B'ea- 'ver, in the county of Beaver and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Bending Glass, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which:

Figure 1 is a side elevation of one form of my improved apparatus adapted to form ogee shapes. Fig. 2 is a cross-section of a modified construction.

The shaping of glass by bending presents in many cases considerable difficulty, espe cially in bending pieces of narrow width and This is due largely to the difliculty of controlling the glass during the'bending operation and keeping it from bending into irregular and im- My invention is designed to overcome these difficulties; and it consists in a bending-matrix having a stop and preferably also a'clamp for holding the glass to be bent, so as to preserve it in proper position relatively to the matrix, and thus to insure its settling down regularly when it has been softened by heat. 7

In Fig. 1 of the drawings, 2 represents a matrix-block having a surface cavity of the shape to be given to the glass. One side 3 of this cavity extends upwardly and outwardly beyond the limits of the matrix or portion of the cavity occupied by the bentglass article, so as to constitute a guide, and at the other side of the cavity there is a clamp or holder 4, which consists of a curved bar or flange, pivoted at 5- at each end of the matrix and extending the entire length of such matrix and adapted to bear down upon the margin of the glass to be bent. Suitable pressure for this purpose is applied by weighted arms 6.

The piece of glass 7, to be bent is placed upon the matrix-blockin the position shown in Fig. 1, one edge of the glass abutting against a stop-shoulder 8 and being held by the clamp 4t and the other edge free and resting on the extended guide-surface 3. The block 2, with the glass, is placed in a heatingfurnace, and when the glass softens it sinks down into the matrix-cavity, taking finally the form shown in full lines at 7.

The glass is controlled during bending by the guidingsurface 3 and by the clamp, so that it is 5'5 obliged to sink into the proper position in the matrix-cavity and to assume the precise form desired, whereas without these elements of my invention the glass being uncontrolled wouldbe apt to be bentirregularly. The mold 66 shown in the drawings gives an article of a compound curve designed as a molding -for glass tiles; but it will be understood that ar ticles of other forms may be made by modifying the shape of the apparatus.

In Fig; 2 I show a modification of my invention in which I omit the clamp and employ only the stop-shoulder 8, against which the edge of the glass is abutted. At the opposite end of the matrix-cavity from the stop- 70 shoulder is a guiding-surface 3, and when the glass is placed upon the matrix, with its end resting against the stop-shoulder, it will be prevented thereby from moving at said end, and the opposite end will sink down along the guiding-surface 3 until the glass is finally bent and occupies the position shown by dotted lines at 7.

I claim- 1. Bending apparatus for glass comprising a matrix and a clamp adapted to hold an end of the glass the opposite end being free; substantially as described.

2. Bending apparatus for glass comprising a matrix and aclamp adapted to hold the end 5 of the glass, said clamp comprising a pivoted finger and weight; substantially as described.

3. Apparatus for bendin g glass comprising a matrix having a guiding-surface extending beyond the matrix-cavity, and a clamp for 9 holding the glass opposite to the guiding-surface substantially as described.

4. Apparatus for bending glass comprising a matrix, having at oneend a stop for the glass, and opposite thereto a guiding-surface extending beyond the matrix -cavity; sub stantially as described.

In testimony whereof I have hereunto set my hand.

HENRY J. SAGE. I

Witnesses:

THOMAS W, BAKEWELL, H. M. OORWIN. 

